glcontext: assert all contexts set the version on realize()

Now that all contexts do that, insist that they keep doing it.

And because they keep doing it, we can support querying the GL version
from gdk_gl_context_get_version() without requiring the context to be
made current.

diff --git a/gdk/gdkglcontext.c b/gdk/gdkglcontext.c
index 294e58e555e29aab34e0749226a39624f5abf696..9d06a3c266c4668bd8dd2238ecdb89d5cb4ed230 100644 (file)
--- a/gdk/gdkglcontext.c
+++ b/gdk/gdkglcontext.c
@@ -1485,7 +1485,11 @@ gdk_gl_context_realize (GdkGLContext  *context,
   priv->api = GDK_GL_CONTEXT_GET_CLASS (context)->realize (context, error);
 
   if (priv->api)
-    g_object_notify_by_pspec (G_OBJECT (context), properties[PROP_API]);
+    {
+      g_assert (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (0, 0)));
+
+      g_object_notify_by_pspec (G_OBJECT (context), properties[PROP_API]);
+    }
 
   return priv->api;
 }
@@ -1511,9 +1515,6 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
   if (priv->extensions_checked)
     return;
 
-  if (!gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (0, 0)))
-    gdk_gl_version_init_epoxy (&priv->gl_version);
-
   priv->has_debug_output = epoxy_has_gl_extension ("GL_ARB_debug_output") ||
                            epoxy_has_gl_extension ("GL_KHR_debug");
 
@@ -1693,10 +1694,6 @@ gdk_gl_context_get_shared_context (GdkGLContext *context)
  * Retrieves the OpenGL version of the @context.
  *
  * The @context must be realized prior to calling this function.
- *
- * If the @context has never been made current, the version cannot
- * be known and it will return 0 for both @major and @minor.
- *
  */
 void
 gdk_gl_context_get_version (GdkGLContext *context,